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(No Model.) 3 sheets sheet l.

J. R. BRAIDWOOD & S. OSWALT. SHAFT AND ELEVATOR FOR MINES.

No. 337,734. Patented Mar. 9, 1886.

Attorney u PETERS. Phmum m. Wnhlngtcn. D. c.

(No Model.) 3 Sheets-Sheet 3. J. R. BRAIDWOOD & S. OSWALT. SHAFT ANDELEVATOR FOR MINES.

PatentedMarIQ, 1886.

the chute.

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SHAFT AND ELEVATOR FOR NHNES.

SPECIFICATION forming part of Letters Patent No. 337,734, dated March 9,1886.

Application filed December 31, 1885. Serial No. 187,233.

To all whom it may concern:

Be it known that we, J OHN It. BRAIDWOOD and SAMUEL OswALr, citizens ofthe United States of America, residing at Pittsburg, in the county ofCrawford and State of Kansas, have invented certain new and usefulImprovements in Shafts and Elevators for Mines; and we do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

Our invention relates to certain new and useful improvements inelevators for coal and other similar mines, the object of the same beingto provide a means whereby the elevator which carries the car, when itreaches a certain point in the shaft, will automatically raise a chuteand dump or tilt the car, which is secured upon the elevator so that thecoal or other material may fall upon the chute, and in its downwardmovement thereon will be sifted or screened; and to this end myinvention consists in the construction and combination of the parts, aswill be hereinafter fullysct forth, and specifically pointed out in theclaims.

In the accompanying drawings, which itlustrate our invention, Figure 1is a side view, partly in section, showing in full lines the elevatorand chute in their normal position, while the dotted lines represent thechute raised, and a car which is carried by the elevator turned so as todump its contents upon Fig. 2 is a transverse sectional view takenthrough the lines or a: of Fig. 1. Fig. 3 is a front view or elevationof the elevator. Fig. 4 is a side view of Fig. 3, and Fig. 5 is a detailperspective view of the chute.

A refers to the shaft, which is made up of suitable vertical beams,which are rigidly con nected to each other by bolts and cross-beams inthe usual manner, and said shalt preferably has two compartments, inwhich different clevators may be raised and lowered. Each of the shaftsis provided with vertical guidebars a, which extend nearly to the top ofsaid shaft. Said shafts are also provided on oppo site sides withguide-bars a, upon which slide a heavycross-bar, B, said guide-bars ahav- (No model.)

ing projecting therefrom stops or pins a, which prevent a downwardmovement of the bar 13 thereon.

Rigidly attached near the upper end of the shaft A,and adjacent to thesides thereof, are vertical bars 0, the lower ends of which are formedinto rack-bars O, and the beams to which these'rack-bars are attachedcarry at their lower ends a screen or bent metal plate, 0, which isrigidly secured toa cross-beam located adjacent thereto, said cross-beambeing attached to the frame of the shaft. The front side of the shaft,at a suitable distance above the chute proper, is provided with anextended frame-work, 1), near the outer and lower ends of which arepivoted arms E, said arms carrying at their outer ends adjustableweights, while the opposite ends extend inwardly and are suitably bentor formed, so as to pass between the beams which support the rack-bars Gand the outer vertical beams of the shaft. The inner ends of thesepivoted bars E are bent upwardly, as shown at e, for the purpose as willbe hereinafter set forth, and adjacent to their inner ends the pivotedbars E are pro vided with perforations,through which pass bolts forconnecting thereto arms F, the opposite ends of said arms beingpivotally attached to projecting ears g, which are formed on theupturned edges of the chute G. The chute G is pivotally attached to theshaft A, beneath the rack-bars C, so that when the elevatorframecontacts with the ends of the arms E said pivoted chute G will be raisedso as to extend across the shaft at an inclination, as shown in thedotted lines in Fig. l.

G refers to an inclined chute, which is attached at its upper end to theshaft, and is provided with a suitable sieve-bottom, so that the coal orother material which is dumped thereon will, during its downwardmovement, become sifted or screened, the debris or waste falling throughsaid sieve.

H refers to the elevator, which is provided with grooved side pieces H,which fit over the guide-bars a of the shaft, and are connectcd to eachother at their upper ends by cross-bar H, at the center portion of whichis attached the elevating-rope, which elevatin g-rope passes through acentral perforation in the sliding bar B, and from this passes over ablock, which is journaled on the upper portion of the'shaft, from whenceit is carried to suitable operating mechanism. The bottom of theelevator has suitable side pieces h, which are connected to each otherat one side of the center by beams h, and through the center portion ofthe lower ends of the recessed side pieces H extends a transverse shaft,1', upon which are rigidly secured the segmental side pieces I, saidside pieces having attached thereto a bottom, I, and rails i, abovewhich rails are located angular bars 2', which will lie over the wheelsof the car, so as to prevent an upward movement of said car. Thesegmental side pieces I are provided with teeth j, with which engage thelower ends of the sliding bars J,which are attached to the inner sidesof the vertical beams H of the elevator, and the upper beam, H, of theelevator is provided with pivoted bars J, which are connected to thesliding bars J at one end, the

opposite ends having upwardly extending portions connected thereto,which will, when the elevator is raised, contact with the slidingcross-bar,so as to depress the ends of thelevers. and thus elevate thesliding bars J, so that they will be out of engagement with the teeth 3of the segments I.

in their downward movement by gravity, and normally hold the platform orbottom Iofthe elevatorin a horizontal position. The bottom or platform Iof the elevator has centrally attached thereto a bar, It, with endextending pieces, and a curved central portion.which is recessedcentrally, so as to engage with a block or catch which is located uponthe center of the bar 70. This bar 70 is held against the block or catchon the car by the spring 70', which is located under the bark, and theupward movement of the bar is prevented by headed pins or bolts k, whichpass through the bar k, and are secured to the platform I. The bar 7cinclines from its ends to its center, so that when a car is pushed ormoved upon the tracks or bars 1' the block thereon will depress the bar70, and will permit the car to move upon its track until it reaches thecenter of the platform, when the catch will engage with the bottom ofthe car and prevent further movement thereof.

The body of the car may be of ordinary construction.

The sliding cross-bar B, hereinbefore referred to, which slides upon thevertical guidebars a, is recessed at its ends, and provided with angularmetal plates b, which extend above and beneath the same, as shown, saidplates preventing a tilting movement of said bar, which might otherwiseoccur and cause the same to jam upon its guide-bars. The platform G hasits sides upturned, while its inner end is somewhat reduced, so as toallow the same to play freely between the guide-bars of theelevator-shaft, and the inner end of the The bars J are operated,

the start. The bars F, which connect the pivoted chute with the weightedpivoted barsE, are adjustable thereon,so that the wear of the parts andthe adjustment of the inclined chute. will be provided for.

The cars Kare adapted and intended to-be moved from the rails in amineupon the tracks on the bottom of the elevator, and after they i havebeen brought to the surface and dumped they are lowered, and can bereadily removed therefrom by simply depressing one end of the bar k,which retains the same in position. A vertical movement of the cars isprevented by the angular bars t.

described, which can be thrown in and out of c gear so as to dump thecar in an opposite direction, so that the contents thereof will be.dumped upon a chute provided therefor.

The operation of my invention as illustrated in the accompanyingdrawings is as follows:"

After the car has been loaded in the mine and rolled upon the elevatorand secured thereon, as previously described, the elevator is hoisted,the parts being in the position as shown in Fig. 1 of the drawings, andas the elevator is raised the upper cross-bar of the frame comes incontact with the ends of the pivotedarms C, elevating said arms andraising the pivoted chute G, said pivoted chute being raised under theelevator as soon as the elevator has been raised sufficiently to contactwith the rackbar 0. The upper cross-beam of the same contacts with thesliding bar B, which engages with the pivoted levers, thus releasing thesliding bars J from the toothed segment. As the elevator is furtherraised, said segments are turned, so as to dump the contents of the carupon the shaft. After the car is dumped the elevator is lowered,and thesegments turn, so as to cause the platform attached thereto to assumeahorizontal position. Immediately after this platform has assnmediitshorizontal position the bar H leaves the sliding bar B, thus allowingthe vertical sliding catches to engage with the toothed segments,so asto hold the platform firm upon the elevator frame, and

as the elevator-frame is further dropped the ends of the arms aredepressed,and the pivoted section of the chute assumes the verticalposition in the shaft.

We claim 1. An elevator for mines or analogous purposes,provided withrack-bars and a movable transverse bar which engage with ,fixturesattached'to the elevator-frame, by means of 1 0 which the platform ofthe elevator will be released and tilted, substantially as shown,and forthe purpose set forth.

2. In combination with ashaft, A, provided same is curved, so that thebottom of the elevator when it is in its downward movement, after beingrelieved of its load, will cause a gradual downward movement of the sameat with guide-strips for an elevator and guidestrips for a sliding bar,and rack-bars secured thereto, an elevator having a movable platformwhich is pivotally attached to the elevatorframe, sliding bars forretaining the pivoted frame in a horizontal position, and means fordisengaging said sliding bars by contacting with the movablecross-piece, substantially as shown, and for the purpose set forth.

3. In an elevator for mines, a shaft having secured thereto near itsupper end a pivoted portion of a chute, said chute being connected toarms which project within the shaft. an elevator adapted to contact withthe inwardlyprojecting arms, s as to raise the chute, substantially asshown, and for the purpose set forth.

4. In an elevator for mines,conslructed substantially as shown, a chutepivoted to the same and connected by rods to pivoted bars which extendwithin the shaft, said shaft being provided above the chute withrack-bars and a sliding transverse bar, in combination with the verticalmoving elevator carrying a pivoted platform having segmental side pieceswhich engage with rack-bars, and sliding bars for holding the platformin a horizontal p0- sition, said sliding bars being operated bycontacting with a movable transverse bar se cured within theshaft,substantially as shown, and for the purpose set forth.

5. In combination with a shaft having a movable cross-bar, rigidvertical rack bars located beneath the same, and a pivoted chute whichis connected by bars to pivoted arms which project within the shaft, anelevator provided with a pivoted car-carrying frame with segmentalteeth, side pieces which engage with the rack-bars, sliding locking-barsJ with pivoted levers, and members which project above the upper frameof the elevator, so that when they contact with a sliding bar within theshaft the locking-bars will be released, and simultaneously therewiththe segments will engage with the rack-bars, so as to dump the platform,and the chute will be raised and inclined under the elevator,substantially as shown, and for the purpose set forth.

6 In a device for elevating and screening coal and other minerals, aVertical shaft having attached thereto an inclined chute with screens,as described, and a pivoted chute-section adapted to remain normally ina vertical position, in combination with an elevator having a pivotedplatform attached thereto, and means, as described, whereby when theelevator is raised the platform will be released and tilted, and thepivoted section of the chute will be brought into position under theelevator to receive the material carried by the platform, substantiallyas. shown, and for the purpose set forth.

In testimony whereof I affix my signature in presence of two w tnesses.

JNO. R. BRAIDWVOOD. SAMUEL OSWFALT. \Vitnesses:

ED\VARD VAN GUNDY, J Amer BRAIDWOOD.

